In order to get the full amount, you’ll need to trade a brand-new iPhone 6 (or presumably a 6 Plus, though it’s not specifically listed on the chart). The trade-in value for each device is actually much lower (ranging from $90 to $400), but shoppers buying a Passport will get a “top-up” worth an additional $150.

If, for whatever reason, you’d like to take advantage of this offer, you’ll need to wait just a few weeks. The program goes into effect on December 1st and runs through February 13th.